Major Winter Storm in the North-Central U.S.; Severe Weather from the Mid-South to Ohio Valley

A major winter storm will bring a swath of heavy snowfall, strong winds, blizzard conditions and freezing rain to the Northern Plains into the Great Lakes region. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-south to the Ohio Valley and the Southeast. Critical fire weather concerns shift to the southern Rockies and Plains. Read More >

Current conditions at

ST. IGNATIUS (SIGM)

Lat: 47.31333°NLon: 114.09806°WElev: 2990.0ft.

NA

18°F

-8°C

Humidity 84%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Last update 15 Mar 10:00 AM MDT
Extended Forecast for

5 Miles SW St. Ignatius MT

  • Today

    Today: Mostly sunny, with a high near 36. Light and variable wind becoming east southeast around 5 mph.

    High: 36 °F

    Mostly Sunny

  • Tonight

    Tonight: A 50 percent chance of snow, mainly after 11pm.  Cloudy, with a low around 28. Calm wind becoming southeast around 5 mph after midnight.  New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Monday

    Monday: Snow before 9am, then rain and snow between 9am and noon, then rain likely after noon.  High near 47. South wind around 6 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow
    then Rain
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of rain before midnight.  Mostly cloudy, with a low around 40. South wind around 8 mph.

    Low: 40 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain.  Mostly cloudy, with a high near 56. South wind 8 to 10 mph.

    High: 56 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain.  Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly before midnight.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain.  Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 36. Light and variable wind becoming east southeast around 5 mph.
Tonight
A 50 percent chance of snow, mainly after 11pm. Cloudy, with a low around 28. Calm wind becoming southeast around 5 mph after midnight. New snow accumulation of less than a half inch possible.
Monday
Snow before 9am, then rain and snow between 9am and noon, then rain likely after noon. High near 47. South wind around 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 40. South wind around 8 mph.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 56. South wind 8 to 10 mph.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
Wednesday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 43.
Thursday
A chance of rain. Mostly cloudy, with a high near 63.
Thursday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 44.
Friday
A chance of rain. Partly sunny, with a high near 66.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 43.
Saturday
A slight chance of rain. Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW St. Ignatius MT
 47.28°N 114.17°W (Elev. 3228 ft)
2:01 am MDT Mar 15, 2026
11am MDT Mar 15, 2026-6pm MDT Mar 21, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database